EP 0949749 B1 20080924 - Improved winding for linear motors without slots
Title (en)
Improved winding for linear motors without slots
Title (de)
Verbesserte Wicklung für nutenlose Linearmotoren
Title (fr)
Bobinage amélioré pour moteurs linéaires sans encoches
Publication
Application
Priority
US 5554598 A 19980406
Abstract (en)
[origin: EP0949749A1] A linear motor utilizing a flat, ironless coil winding (10) which can be of the printed circuit type (stamped, etched, or deposited and adhered to a rigid substrate). The winding (10) provides coils that are relativly movable between straight, parallel rows of magnets (12). The winding can also be fabricated using insulated wire to form a distributed winding. In designing the winding, particular attention is paid to the length of the straight portion perpendicular to the direction of the linear motion (LM) compared to the height of the linear air gap (LB) and the outside dimension of the winding (LS). Selection of these dimensions determines four key motor parameters, namely the motor back emf (Ke), the motor force constant (Kf), the winding resistance (R), and the motor force ripple (Fr). <IMAGE>
IPC 8 full level
H02K 41/03 (2006.01); H02K 3/26 (2006.01); H02K 3/28 (2006.01)
CPC (source: EP US)
H02K 3/26 (2013.01 - EP US); H02K 41/031 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0949749 A1 19991013; EP 0949749 B1 20080924; DE 69840042 D1 20081106; JP 4198787 B2 20081217; JP H11299214 A 19991029; US 6160327 A 20001212
DOCDB simple family (application)
EP 98122360 A 19981125; DE 69840042 T 19981125; JP 23050598 A 19980817; US 5554598 A 19980406